Key-fastener.



F. D. GOSMAN.

KEY FASTENER. APPLICATION FILED AUG-24, I915.

1 1 88,4 10. I Patented June 27, 1916.-

WITNESSES.- 11v VENTOR.

,2 F fl. God/r1077 FRANK D. GOSIVIAN, OF- DENVER, COLORADO.

KEY-FASTENER.

To all whom it may concern Be it known that I, FRANK D. GOSMAN, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Key-Fasteners, of which the following is a specification.

This invention relates to key fasteners, and its principal object resides in the provision of a device of simple construction which is readily attached to a door, and which when properly adjusted with relation to a key inserted in the key-hole of the door-lock, will effectively prevent the key from being pushed through the key-hole or from being turned by means of an instrument inserted in the key-hole from'the outside of the door.

With the above object in view, my improved key-fastener consists of a plate and means to slidably and pivotally fasten the same in operative adjacency to the keyhole of a door-lock. The plate is securely-locked in its adjusted, operative position with relation to the key-hole partially by the fastening means above referred to and partially by engagement with the stem of a key insertedin the key-hole. The plate has an outwardly projecting shelf which by its po sition relative to the bow of the key,prevents the key from being turned and the portion of the plate beneath its shelf covers the lower part of the key-hole, thereby obstructing the removal of the bit of the key from the lock.

Having thus outlined the essential features of my invention, it will be more fully understood by reference to the accompanying drawings, in the various views of which like parts are similarly designated.

Figure 1 is a fragmentary face view of a door showing my improved key-fastener in its operative position with relation to the lock thereof, Fig. 2, an edge view of the door shown in Fig. 1, Fig. 3, a section taken along the line 33, Fig. 1, and Fig. 4-, a detail view of the fastener.'

Referring to the drawings by numerical reference characters, 2 designates the lock of a door 3, including an escutcheonA.

5 designates the key-hole of the door and 6 the key which in the drawinghas been shown in its locking position within the lock.

My improved key-fastener comprises a plate 7 having adjacent one of its ends, a laterally projecting shelf 8, and in its said Specification of Letters Patent. Pggtgnted Jung 2*? 15916,

Application filed August 24, 1915.

Serial No. 47,079.

stud loosely extends is composed of a major part 14 which extends longitudinally with relation to the plate 7, and a minor part or recess 15 which projects laterally from the lower end of the first-mentioned part. The recess is of arcuated form and connected with the major nart'of the slot by a passage of suflicient width to admit the stud 12.

When the key-fastener is in its operative position, as illustrated in Figs. 1 to 3 of the drawings, the stud occupies the recess of the slot, thereby locking the plate against longitudinal displacement, and the stem of the key inserted through the key-hole into the lock, is placed within the notch 9 in the upper edge of the'plate, whereby the fastener is secured against lateral movement. Then the plate is thus securely fixed in its operative position 1t covers the lower part of the key-hole to obstruct the removal of the key from the lock, and the shelf extends beneath the bow 16 of the key to prevent the same from being turned in the lock. It will thus be seen that the fastener effectively guards I against the operation of the look from without the door, which without the provision of a protectlve means 1S readily accomplished either by pushing the key through the key-hole and then inserting another key into the look through the key-hole on the outside of the door, or by gripping the pin of the key with an instrument such as a pair of nippers, inserted into thekey-hole and then turning the key. When it is desired to operate the lock by turningthe key from the inside of the door, the'fastener is moved to an inoperative position in which it is suspended from the stud, by loosening the nut and then imparting to the plate a combined sliding and pivotal movement after it has been slid laterally to move the stud from the recess into the major part of the slot.

From the foregoing description it will be readily understood that in case the fastener.

is applied to a look not having the escutcheon, a washer or the like must be placed around the stud to prevent the plate from being driven into the wood of the door when the nut is screwed upon its outer surface, and that on new looks the stud may be formed as an integral part of the escutcheon to obviate its being screwed into the door as in the form shown in the drawings which is particularly adapted for application to locks already in use.

I am aware that fasteners operating on a principle similar to that involved in my invention are known in the art to which my invention appertains, and I therefore do not claim such device broadly, but limit my claims to the novel means for attaching the fastener to the door, which by reason of their simplicity, their ready adjustment and their superior protective properties are particularly adapted for the purpose for which they are designed, and greatly add to the value of the fastener as a safeguard attachment for looks of doors.

Having thus described my invention what I claim and desire to secure by Letters Patent is:

1. A key-fastener of the character described comprising in combination with a stud projecting from a door, a plate having a projection to obstruct the rotary movement of the bow of a key inserted in a lock of the door to which the fastener is applied, a notch to admit the stem of the key, and a slot adapted to admit the stud and composed of a major part permitting of a sliding and pivotal movement of the plate upon the stud, and a recess extending laterally from the said part to receive the stud when the fastcneris in its operative position, and a nut applied to the stud.

2. A key-fastener of the character described comprising in combination with a. stud projecting from the escutcheon of a look, a plate having a projection to obstruct the rotary movement of the bow of a key insorted in the said look, a notch to admit the stem of the key, and a slot adapted to admit the stud and composed of a major part per mitting of a sliding and pivotal movement of the plate upon the stud, and a recess extending laterally from the said part to re ceive the stud when the fastener is in its operative position, and a nut applied to the stud.

3. A key fastener of the character described comprising a bolt adapted to be applied in a projecting position with relation to a door, and a plate having a projection to Copies of this patent may be obtained for of the plate upon the bolt, and a recess ex tending laterally from the said part to ceive the bolt when the fastener is in its operative position.

4. A key-fastener of the character described comprising a bolt adapted to be applied in a projecting position with relation to a door, and a plate having a projection to obstruct the rotary movement of the bow of a key inserted in a lock of the door to which the fastener is applied, and a slot adapted to admit the bolt and composed of a major part permitting of a sliding and pivotal move ment of the plate upon the bolt, and a recess extending laterally from the said part to receive the bolt when the fastener is in its operative position.

5. A key-fastener of the character described comprising a bolt adapted to be applied in a projecting position with relation to a door, and a plate having a forwardly projecting rigid shelf to obstruct the rotary movement of the bow of a key inserted in a lock of the door to which the fastener is applied, ,and a slot adapted to admit the bolt and to permit of a combined sliding and pivotal movement of the plate whereby to separate the said shelf from the bow of the key. I

6. The combination with a door having a key-operated lock, of a plate having a combined pivotal and sliding movement on the door, and provided with a forwardly projecting. rigid shelf to obstruct the rotary movement of the bow of a key inserted in the lock, and means for securing the plate in its operative position.

7. The combination with a door having a key-operated lock, of a plate having a com-- bined pivotal and sliding movement on the door, and provided with a rigid forwardly projecting shelf to obstruct the rotary move ment of the bow of a key inserted in the lock and with a notch to admit the stem of the key, and means for securing the plate in its operative position.

In testimony whereof I have alliXed my signature in presence of two witnesses.

V FRANK D. GOSMAN.

Witnesses:

G. J. RoLLaNDnT, L. RnoADns.

five cents each, by addressing the Commissioner of latents, Washington, D. G." 

